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1. 发明申请

US20060261994A1 Signal processing circuit and method for use with an optical navigation system 有权
标题翻译：用于光导航系统的信号处理电路及方法
公开(公告)号：US20060261994A1
公开(公告)日：2006-11-23
申请号：US11271039
申请日：2005-11-12
申请人： Brian Todoroff , Douglas Webb
发明人： Brian Todoroff , Douglas Webb
IPC分类号： H03M1/12
CPC分类号： G06F3/0317 , H03M1/50
摘要： A signal processing circuit and processing method are provided for measuring an analog signal from a photo-detector. Generally, the method includes steps of: (i) sampling and storing a characteristic of the signal at a first predetermined time following a reset of the circuit; (ii) sampling the characteristic of the signal at a second predetermined time following a reset or initialization of the circuit; (iii) determining a difference between the stored characteristic of the signal sampled at the first predetermined time and the characteristic of the signal sampled at the second predetermined time; and (iv) converting the determined difference to a digital value and determining a slope of the signal from the digital value and the difference between the first and second predetermined times. Thus, the measurement of the slope is independent of and substantially unaffected by absolute values of the characteristics measured at the first and second predetermined times.
摘要翻译：提供信号处理电路和处理方法，用于测量来自光检测器的模拟信号。通常，该方法包括以下步骤：（i）在电路复位之后的第一预定时间采样和存储信号的特性; （ii）在电路的复位或初始化之后的第二预定时间采样信号的特性; （iii）确定在第一预定时间采样的信号的存储特性与在第二预定时间采样的信号的特性之间的差; 以及（iv）将确定的差值转换为数字值，并根据数字值和第一和第二预定时间之间的差确定信号的斜率。因此，斜率的测量与第一和第二预定时间测量的特性的绝对值无关并且基本上不受影响。

2. 发明授权

US08547336B1 Circuit and method for determining motion with redundant comb-arrays 有权
标题翻译：用冗余梳阵列确定运动的电路和方法
公开(公告)号：US08547336B1
公开(公告)日：2013-10-01
申请号：US13023533
申请日：2011-02-08
申请人： Yansun Xu , Brian Todoroff
发明人： Yansun Xu , Brian Todoroff
IPC分类号： G06F3/033
CPC分类号： G06F3/0317 , G06F3/03549
摘要： An optical navigation system and method are provided. In one embodiment, the method includes: (i) generating for a first group of photosensitive elements a first quasi-sinusoidal signal at a first time, and a second quasi-sinusoidal signal at a second time in response to motion of light received thereon in a first direction; (ii) computing from the first and second quasi-sinusoidal signals a phase angle change; and (iii) computing from the first and second quasi-sinusoidal signals a radius value. Other embodiments are also described.
摘要翻译：提供了一种光学导航系统和方法。在一个实施例中，该方法包括：（i）响应于其上接收的光的运动，在第一时间产生第一组光敏元件第一准正弦信号和第二准正弦信号第一个方向（ii）从第一和第二准正弦信号计算相位角变化; 和（iii）从第一和第二准正弦信号计算半径值。还描述了其它实施例。

3. 发明申请

US20070165207A1 Method for determining motion using a velocity predictor 有权
标题翻译：使用速度预测器确定运动的方法
公开(公告)号：US20070165207A1
公开(公告)日：2007-07-19
申请号：US11324424
申请日：2006-01-03
申请人： Yansun Xu , Brian Todoroff
发明人： Yansun Xu , Brian Todoroff
IPC分类号： G01P3/36 , G01C3/08
CPC分类号： G06F3/0317 , G01P3/36
摘要： A method is provided for determining motion of an optical sensor including a periodic photo-diode array relative to a surface. The method includes steps of (i) generating sets of quasi-sinusoidal signals responsive to motion along first and second directions; (ii) combining the sets of signals to generate a wrapped phase angle value for each direction at a first time; (iii) combining the sets of signals at a second time to generate a second wrapped phase angle value for each direction; (iv) computing wrapped phase angle changes for each direction between the first time and the second time; (v) computing velocity predictors for each direction using corrected average phase angle changes from a number of preceding successive frames; (vi) calculating the number of full 27π rotations needed to unwrap the phase angle changes for each direction using the velocity predictors; and (vii) computing the unwrapped or corrected phase angle changes.
摘要翻译：提供了一种用于确定包括相对于表面的周期性光电二极管阵列的光学传感器的运动的方法。该方法包括以下步骤：（i）响应于沿第一和第二方向的运动产生一组准正弦信号; （ii）组合所述信号集合以在第一时间为每个方向生成包裹的相位角值; （iii）在第二时间组合所述信号组以产生每个方向的第二包裹相位角值; （iv）在第一时间和第二时间之间计算每个方向的包裹的相位角变化; （v）使用来自多个先前连续帧的校正的平均相位角变化来计算每个方向的速度预测器; （vi）使用速度预测器来计算用于展开每个方向的相位角变化所需的全部27pi旋转数; 和（vii）计算展开或校正的相位角变化。

4. 发明授权

US08031176B1 Optical navigation system using a single-package motion sensor 有权
标题翻译：光学导航系统采用单包运动传感器
公开(公告)号：US08031176B1
公开(公告)日：2011-10-04
申请号：US12009863
申请日：2008-01-22
申请人： Steven Sanders , John Frame , Brian Todoroff , Yansun Xu
发明人： Steven Sanders , John Frame , Brian Todoroff , Yansun Xu
IPC分类号： G09G5/08
CPC分类号： G06F3/0317 , G06F3/03543 , G06F3/0383
摘要： An optical navigation apparatus including a package incorporating a light source and a single die of silicon. The single die of silicon includes a photodiode array configured at the detection plane to receive the speckle pattern of the scattered light from the collection optics, circuitry configured to process signals from the photodiode array to determine changes in position of the apparatus relative to the tracking surface, analog circuitry configured to control and drive current through the light source, interface circuitry configured to communicate position data by outputting the position data via a data interface, a microcontroller comprising a processor core and memory for storing computer-readable code and data, and a system bus configured to communicate instructions and data between the microcontroller and said digital, analog, and interface circuitries. Other embodiments, aspects and features are also disclosed.
摘要翻译：一种光学导航设备，包括结合有光源和单个硅片的封装。硅的单个裸片包括配置在检测平面处的光电二极管阵列，以接收来自收集光学器件的散射光的散斑图案，电路被配置为处理来自光电二极管阵列的信号，以确定设备相对于跟踪表面的位置的变化配置成控制和驱动通过光源的电流的模拟电路，被配置为通过经由数据接口输出位置数据来传送位置数据的接口电路，包括处理器核心的微控制器和用于存储计算机可读代码和数据的存储器，以及系统总线被配置为在微控制器和所述数字，模拟和接口电路之间传送指令和数据。还公开了其它实施例，方面和特征。

5. 发明授权

US08669940B1 Optical navigation system using a single-package motion sensor 有权
标题翻译：光学导航系统采用单包运动传感器
公开(公告)号：US08669940B1
公开(公告)日：2014-03-11
申请号：US13252768
申请日：2011-10-04
申请人： Steven Sanders , John Frame , Brian Todoroff , Yansun Xu
发明人： Steven Sanders , John Frame , Brian Todoroff , Yansun Xu
IPC分类号： G09G5/08
CPC分类号： G06F3/0317 , G06F3/03543 , G06F3/0383
摘要： An optical navigation apparatus including a package incorporating a light source and a single die of silicon. The single die of silicon includes a photodiode array configured at the detection plane to receive the speckle pattern of the scattered light from the collection optics, circuitry configured to process signals from the photodiode array to determine changes in position of the apparatus relative to the tracking surface, analog circuitry configured to control and drive current through the light source, interface circuitry configured to communicate position data by outputting the position data via a data interface, a microcontroller comprising a processor core and memory for storing computer-readable code and data, and a system bus configured to communicate instructions and data between the microcontroller and said digital, analog, and interface circuitries. Other embodiments, aspects and features are also disclosed.
摘要翻译：一种光学导航设备，包括结合有光源和单个硅片的封装。硅的单个裸片包括配置在检测平面处的光电二极管阵列，以接收来自收集光学器件的散射光的散斑图案，电路被配置为处理来自光电二极管阵列的信号，以确定设备相对于跟踪表面的位置的变化被配置为控制和驱动通过光源的电流的模拟电路，被配置为通过经由数据接口输出位置数据来传送位置数据的接口电路，包括处理器核心的微控制器和用于存储计算机可读代码和数据的存储器，以及系统总线被配置为在微控制器和所述数字，模拟和接口电路之间传送指令和数据。还公开了其它实施例，方面和特征。

6. 发明授权

US08263921B2 Processing methods for speckle-based motion sensing 有权
标题翻译：基于斑点的运动检测的处理方法
公开(公告)号：US08263921B2
公开(公告)日：2012-09-11
申请号：US11890651
申请日：2007-08-06
申请人： Robert J. Lang , Brian Todoroff , Yansun Xu , Jeffry C. Bailey
发明人： Robert J. Lang , Brian Todoroff , Yansun Xu , Jeffry C. Bailey
IPC分类号： G06F3/033 , G09G5/08
CPC分类号： G06F3/03543 , G06F3/0317 , G06F3/038
摘要： One embodiment relates to a method of tracking motion using a speckle-based motion sensor. A distance moved is determined by a first signal processing procedure, and a distance moved is determined by a second signal processing procedure. Selection between said distances is made based on whether the distance determined by the first signal processing procedure exceeds a predetermined threshold distance. According to a preferred embodiment, the first signal processing procedure makes a more accurate determination of distance for slower speeds, while the second signal processing procedure makes a more accurate determination of distance for higher speeds. Other embodiments, aspects and features are also disclosed.
摘要翻译：一个实施例涉及使用基于散斑的运动传感器跟踪运动的方法。移动的距离由第一信号处理过程确定，移动的距离由第二信号处理过程确定。基于由第一信号处理过程确定的距离是否超过预定阈值距离来进行所述距离之间的选择。根据优选实施例，第一信号处理过程对较慢速度的距离进行更准确的确定，而第二信号处理过程更准确地确定较高速度的距离。还公开了其它实施例，方面和特征。

7. 发明申请

US20090040062A1 Processing methods for speckle-based motion sensing 有权
标题翻译：基于斑点的运动检测的处理方法
公开(公告)号：US20090040062A1
公开(公告)日：2009-02-12
申请号：US11890651
申请日：2007-08-06
申请人： Robert J. Lang , Brian Todoroff , Yansun Xu , Jeffry C. Bailey
发明人： Robert J. Lang , Brian Todoroff , Yansun Xu , Jeffry C. Bailey
IPC分类号： G08B21/00
CPC分类号： G06F3/03543 , G06F3/0317 , G06F3/038
摘要： One embodiment relates to a method of tracking motion using a speckle-based motion sensor. A distance moved is determined by a first signal processing procedure, and a distance moved is determined by a second signal processing procedure. Selection between said distances is made based on whether the distance determined by the first signal processing procedure exceeds a predetermined threshold distance. According to a preferred embodiment, the first signal processing procedure makes a more accurate determination of distance for slower speeds, while the second signal processing procedure makes a more accurate determination of distance for higher speeds. Other embodiments, aspects and features are also disclosed.
摘要翻译：一个实施例涉及使用基于散斑的运动传感器跟踪运动的方法。移动的距离由第一信号处理过程确定，移动的距离由第二信号处理过程确定。基于由第一信号处理过程确定的距离是否超过预定阈值距离来进行所述距离之间的选择。根据优选实施例，第一信号处理过程对较慢速度的距离进行更准确的确定，而第二信号处理过程更准确地确定较高速度的距离。还公开了其它实施例，方面和特征。

8. 发明申请

US20060106319A1 Signal processing method for use with an optical navigation system 有权
标题翻译：用于光导航系统的信号处理方法
公开(公告)号：US20060106319A1
公开(公告)日：2006-05-18
申请号：US11268898
申请日：2005-11-08
申请人： Brian Todoroff , Yansun Xu
发明人： Brian Todoroff , Yansun Xu
IPC分类号： A61B6/00
CPC分类号： G06F3/0317
摘要： A signal processor and method are provided for detecting movement of a surface relative to an optical sensor having an array of photosensitive elements. Generally, the method involves: (i) sampling each of a number (M) of phase signals from the photosensitive elements, each of the M signals having a magnitude (Ai) and including a tracking signal at a frequency being tracked and a background signal at other frequencies that offsets the tracking signal, where i, an index of the signals, is a whole number between 0 and M-1; (ii) eliminating the offset to the tracking signal due to the background signal to generate M non-offset phase signals having a magnitude (A′i); (iii) adjusting phase angles (θi) of the non-offset phase signals to generate M weighted phase signals (A′iθ′i); and (iv) combining each of the M weighted phase signals (A′iθ′i) to generate an average weighted phase having a phase angle (θ), that when tracked over time indicates a direction and velocity of the movement of an image of the surface mapped to the array.
摘要翻译：提供了一种用于检测表面相对于具有光敏元件阵列的光学传感器的移动的信号处理器和方法。通常，该方法包括：（i）对来自感光元件的数量（M）个相位信号中的每一个采样，M个信号中的每一个具有幅度（A SUB），并且包括跟踪信号跟踪的频率和偏移跟踪信号的其他频率的背景信号，其中i，信号的索引是0和M-1之间的整数; （ii）消除由于背景信号引起的对跟踪信号的偏移以产生具有幅度（A'> I>）的M个非偏移相位信号; （iii）调整非偏移相位信号的相位角（θθi）以产生M个加权相位信号（A' >）; 以及（iv）组合每个M个加权相位信号（A'），以产生具有相位角（θ）的平均加权相位，即当随着时间跟踪，表示映射到阵列的表面的图像的移动的方向和速度。

9. 发明授权

US09103658B2 Optical navigation module with capacitive sensor 有权
标题翻译：具有电容式传感器的光学导航模块
公开(公告)号：US09103658B2
公开(公告)日：2015-08-11
申请号：US13248355
申请日：2011-09-29
申请人： Jinghui Mu , Brett Alan Spurlock , Yansun Xu , John Frame , KeCai Zeng , Brian Todoroff
发明人： Jinghui Mu , Brett Alan Spurlock , Yansun Xu , John Frame , KeCai Zeng , Brian Todoroff
IPC分类号： G06F3/042 , G01B11/00 , G01B11/22 , G06F3/0354
CPC分类号： G01B11/002 , G01B11/22 , G06F3/03547 , G06F3/0421
摘要： Optical navigation modules and methods of operating the same to sense relative movement between the optical navigation module and a tracking surface are provided. In one embodiment, the optical navigation module comprises: (i) a light source to illuminate at least a portion of a surface relative to which the optical navigation module is moved; (ii) an integrated circuit (IC) including a photo-detector array (PDA) to detect a light pattern propagated onto the PDA from the surface, and a signal processor to translate changes in the light pattern propagated onto the PDA into data representing motion of the optical navigation module relative to the surface; and (iii) a substrate to which the light source and IC are mounted, the substrate including an aperture in a light path between the surface and the PDA. Other embodiments are also disclosed.
摘要翻译：提供了光学导航模块及其操作方法以检测光学导航模块和跟踪表面之间的相对运动。在一个实施例中，光学导航模块包括：（i）照亮光导管模块移动的表面的至少一部分的光源; （ii）包括用于检测从表面传播到PDA上的光图案的光电检测器阵列（PDA）的集成电路（IC）以及将传播到PDA上的光图案的变化转换成表示运动的数据的信号处理器的光学导航模块相对于表面; 和（iii）安装有光源和IC的基板，所述基板在所述表面和所述PDA之间的光路中包括孔。还公开了其他实施例。

10. 发明授权

US07728816B2 Optical navigation sensor with variable tracking resolution 有权
标题翻译：具有可变跟踪分辨率的光学导航传感器
公开(公告)号：US07728816B2
公开(公告)日：2010-06-01
申请号：US11484057
申请日：2006-07-10
申请人： Yansun Xu , Brian Todoroff , Jahja I. Trisnadi , Clinton B. Carlisle
发明人： Yansun Xu , Brian Todoroff , Jahja I. Trisnadi , Clinton B. Carlisle
IPC分类号： G09G5/08
CPC分类号： G06F3/0317
摘要： One embodiment relates to a method of sensing motion of an optical sensor relative to a surface. A first resolution and a second resolution are set. Measurement signals are obtained from a sensor array, and the motion of the optical sensor relative to the surface is tracked using the measurement signals. The tracking of the motion in a first dimension is performed at the first resolution, and the tracking of the motion in a second dimension is performed at the second resolution. Another embodiment relates to an optical sensor apparatus for sensing motion relative to a surface, wherein the tracking of the motion is performed at a variable resolution along each of two axes. Other embodiments and features are also disclosed.
摘要翻译：一个实施例涉及一种感测光学传感器相对于表面的运动的方法。设定第一分辨率和第二分辨率。从传感器阵列获得测量信号，并使用测量信号跟踪光学传感器相对于表面的运动。以第一分辨率执行在第一维度中的运动的跟踪，并且以第二分辨率执行在第二维度中的运动的跟踪。另一实施例涉及一种用于感测相对于表面的运动的光学传感器装置，其中以两个轴的每一个可变分辨率执行运动的跟踪。还公开了其它实施例和特征。

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